ROI is designed to track the WisdomTree LargeCap Growth Index, a fundamentally weighted index which measures the stock performance of approximately 300 large-cap growth companies in the U.S, with initial weights of each company in the index set annually based on earnings generated in the prior four fiscal quarters.

About Wisdom TreeWisdomTree® is a leading ETF sponsor and innovative index developer using its own fundamentally weighted index methodology. WisdomTree also licenses its indexes to third parties for proprietary products and offers a platform to promote the use of WisdomTree ETFs in 401(k) plans. Approximately $3.5 billion in assets currently are managed against the WisdomTree Indexes by WisdomTree and third parties under license from WisdomTree.

WisdomTree is the marketing name for WisdomTree Investments, Inc. and its wholly owned subsidiaries WisdomTree Asset Management, Inc. and WisdomTree Retirement Services, Inc. WisdomTree Asset Management, Inc. is a registered investment advisor and is the investment advisor to the WisdomTree Trust and the WisdomTree ETFs. The WisdomTree Trust is a registered open-end investment company. Each WisdomTree ETF is a series of the WisdomTree Trust. WisdomTree Retirement Services, Inc. supports the use of the WisdomTree ETFs in retirement plans by financial professionals.

Exchange traded products listed on NYSE Arca represent 79% of ETF and ETN assets under management in the U.S. , nearly $385 billion, the most of any exchange. As the first fully electronic platform to utilize designated liquidity providers, NYSE Arca sets the national best bid and offer nearly 82% of the time, leading all U.S. exchanges. NYSE Arca remains an established leader in the ETF and ETN marketplace offering investors some of the industry’s fastest and most innovative trading tools to access liquidity. Including today’s listings, NYSE Arca has 707 primary ETF listings. Additionally, NYSE Arca lists 85 ETNs and 246 certificates and trades all other eligible ETFs on a UTP basis.

About NYSE EuronextNYSE Euronext (NYX) is the world’s leading, most liquid and diverse exchange group. It offers a broad and growing array of financial products and services in cash equities, futures, options, exchange-traded products, bonds, market data, and commercial technology solutions, all designed to meet the evolving needs of issuers, investors and financial institutions. Spanning multiple asset classes and six countries, NYSE Euronext’s exchanges include the New York Stock Exchange, Liffe, Euronext and NYSE Arca. With more than 6,500 listed issues, more than any other exchange group, trading on NYSE Euronext’s equity markets represents more than one-third of the world’s cash equities volume. NYSE Euronext also manages the leading European derivatives exchange by value of trading. NYSE Euronext is part of the S&P 500 index and the only exchange operator in the S&P 100 index. For more information, please visit www.nyx.com.

Cautionary Note Regarding Forward-Looking StatementsThis press release may contain forward-looking statements, including forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995. Such forward-looking statements include, but are not limited to, statements concerning NYSE Euronext’s plans, objectives, expectations and intentions and other statements that are not historical or current facts. Forward-looking statements are based on NYSE Euronext’s current expectations and involve risks and uncertainties that could cause actual results to differ materially from those expressed or implied in such forward-looking statements. Factors that could cause NYSE Euronext’s results to differ materially from current expectations include, but are not limited to: NYSE Euronext’s ability to implement its strategic initiatives, economic, political and market conditions and fluctuations, government and industry regulation, interest rate risk and U.S. and global competition, and other factors detailed in NYSE Euronext’s reference document for 2007 (“document de référence”) filed with the French Autorité des Marchés Financiers (Registered on May 15, 2008 under No. R. 08-054), 2007 Annual Report on Form 10-K and other periodic reports filed with the U.S. Securities and Exchange Commission or the French Autorité des Marchés Financiers. In addition, these statements are based on a number of assumptions that are subject to change. Accordingly, actual results may be materially higher or lower than those projected. The inclusion of such projections herein should not be regarded as a representation by NYSE Euronext that the projections will prove to be correct. This press release speaks only as of this date. NYSE Euronext disclaims any duty to update the information herein.